21 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Burlington | 1 | 2,563 | 2,637 | -0.58% | 1,139 | 2.25 | City |
| Rock Creek township | 2 | 901 | 924 | -0.33% | 17 | 53.95 | Township |
| Lebo | 3 | 867 | 887 | -0.46% | 906 | 0.96 | City |
| Ottumwa township | 4 | 708 | 710 | 0.43% | 15 | 47.09 | Township |
| Waverly | 5 | 551 | 570 | -0.72% | 753 | 0.73 | City |
| LeRoy township | 6 | 550 | 548 | 0.73% | 26 | 20.78 | Township |
| Neosho Falls township | 7 | 453 | 436 | 0.67% | 6 | 75.05 | Township |
| LeRoy | 8 | 440 | 449 | -0.45% | 534 | 0.82 | City |
| New Strawn | 9 | 402 | 414 | -0.5% | 507 | 0.79 | City |
| Burlington township | 10 | 373 | 376 | 0% | 12 | 30.61 | Township |
| Gridley | 11 | 309 | 313 | -0.32% | 722 | 0.43 | City |
| Pleasant township | 12 | 260 | 252 | 1.17% | 4 | 60.03 | Township |
| Key West township | 13 | 247 | 248 | 0.41% | 5 | 47.42 | Township |
| Pottawatomie township | 14 | 189 | 195 | -0.53% | 4 | 53.92 | Township |
| Avon township | 15 | 169 | 170 | 0.6% | 5 | 30.86 | Township |
| Star township | 16 | 152 | 154 | 0% | 4 | 34.70 | Township |
| Hampden township | 17 | 148 | 143 | 1.37% | 7 | 22.06 | Township |
| Neosho Falls | 18 | 138 | 133 | 0.73% | 272 | 0.51 | City |
| Neosho township | 19 | 115 | 116 | 0% | 2 | 47.75 | Township |
| Spring Creek township | 20 | 109 | 110 | 0% | 3 | 34.75 | Township |
| Olivet | 21 | 75 | 72 | 1.35% | 298 | 0.25 | City |
Burlington is the largest city in Coffey County, with a population of 2,563.
Olivet is the smallest city in Coffey County.
There are 21 cities in Coffey County, Kansas.